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Finding the Fourth Proportional to 488,620.20, 732,735.90 and 172,914.60

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Solution

The fourth proportional to 488,620.20, 732,735.90 and 172,914.60 is: 259,303.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,620.20 : 732,735.90 = 172,914.60 : x
  2. Step 2: Convert to fraction form
    488,620.20/732,735.90 = 172,914.60/x
  3. Step 3: Cross multiply
    488,620.20x = 732,735.90 × 172,914.60
  4. Step 4: Simplify right side
    488,620.20x = 126,700,735,054.14
  5. Step 5: Solve for x
    x = 126,700,735,054.14/488,620.20
  6. Step 6: Final answer
    x = 259,303.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.